Arbor for multigraph machines



M. HURLBURT.

ARBOR FOR MULTIGRAPH MACHINES.

APPLICATlON FILED MAY 16, 1921.

Patented Mar. 21, 1922.

q jl v 7 17 f3 [0 1 1? 10 2%- 1 INVENTOR M7127) r/bur/ BY f ' ATTORNEY UNITED STATES PATENT OFFICE.

ARBOR FOR MULTIGRAPH MACHINES.

Application filed May 16, 1921.

To all 20 ham it may concern Be it known that I, MARION HURLBURT, citizen of the United States, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Arbors for Multigraph Machines, of which the following is a s ecification.

his invention relates generally to multi: graphing machines, having more particular reference to a roll or arbor for mounting the ribbons, to which the inking sheets are attached.

The invention has for an object to provide a simple form of arbor which will facilitate the insertion and removal of the ribbon.

For further comprehension of the invention, and of the objects and advantages thereof, reference will be had to the following description and accompanying drawings, and to the appended claim in which the various novel features of the invention are more particularly set forth.

Fig. 1 of the drawings is a perspectiveview of a roll or arbor for multigraphing machines constructed I according to my invention, showing the two separable elements thereof drawn apart.

Fig. 2 is a longitudinal sectional view taken on the line 22 of Fig. 1.

The arbors or rolls heretofore employed in carrying the ribbons in multigraphing machines have been disadvantageous in that an undesirable length of time was necessitated for their removal. My improved arbor while following the general outlines of those heretofore used, obviates this disadvantage.

As here shown the arbor 10 is of the ordinary tubular form and provided with a pair of disk-like heads 11 at opposite ends, these heads having the usual central apertures 12 to receive the elements on which the arbor is Specification of Letters Patent.

Patented Mar. 21, 1922.

Serial No. 470,077.

tion is provided on its inner end, or that opposite to the one on which the head 11 is fixed, with a diminished extension 14 which is adapted to fit with a frictional hold in the adjacent end of the other section 10. The

extreme end of this extension 14: is prefernally slotted as at 17 and 17 along one side thereof, these two slots registering and forming a continuous slot extending between the heads 11 when the arbor is assembled as in Fig. 2. These slots 17, 17 are for the insertion of the ribbon while at the same time they permit of an expansive and contractive movement of the extension 1 1, and the end of section 10 in which it engages, which in sures a firm holding'of these parts without undue friction. As will be apparent my improved arbor permits of the ready replacing of the ribbon which can be removed from the longsection 10' when the short section 10 is removed, and replaced by first inserting the new ribbon in the long section 10 and the short section 10 fitted thereover.

Having thus described my invention what I claim as new and desire to protect by Letters Patent of the United States is as follows:

An arbor for multigraphing ,machines comprising a tubular element divided at a point between its ends into two sections of signature.

MARION HURLBURT. 

